T
T
T
S
S
S
6
6
6
0
0
0
G
G
G
S
S
S
S
S
S
D
D
D
2
2
2
5
5
5
D
D
D
-
-
-
M
M
M
T
T
T
S
S
S
1
1
1
2
2
2
0
0
0
G
G
G
S
S
S
S
S
S
D
D
D
2
2
2
5
5
5
D
D
D
-
-
-
M
M
M
2.5” Solid State Drive
Transcend Information Inc.
Preliminary V1.0
15
the drive can be unlocked using the master password.
If the user password is lost and Maximum security level is set, it is impossible to access data. However, the drive can be
unlocked using the ERASE UNIT command with the master password. The drive will erase all user data and unlock the
drive.
SATA Optional Features
Power Segment Pin P11
Pin P11 of the power segment of the device connector may be used by the device to provide the host with an activity
indication. The activity indication provided by pin P11 is primarily for use in backplane applications.
Asynchronous Signal Recovery
Phy may support asynchronous signal recovery for those applications where the usage model of device insertion into a
receptacle (power applied at time of insertion) does not apply.
When signal is lost, both the host and the device may attempt to recover the signal. A host or device shall determine loss
of signal as represented by a transition from PHYRDY to PHYRDYn, which is associated with entry into states LSI:
NoCommErr or LS2:NoComm within the Link layer. Note that negation of PHYRDY does not always constitute a loss of
signal. Recovery of the signal is associated with exit from state LS2:NoComm. If the device attempts to recover the
signal before the host by issuing a COMINIT, the device shall return its signature following completion of the OOB
sequence which included COMINIT. If a host supports synchronous signal recovery, when the host receives an
unsolicited COMINIT, the host shall issue a COMRESET to the device. An unsolicited COMINIT is a COMINIT that was
not in response to a preceding COMRESET, as defined by the host not being in the HP2:HR_AwaitCOMINIT state when
the COMINIT signal is first received.
When a COMRESET is sent to the device in response to an unsolicited COMINIT, the host shall set the Status register to
7Fh and shall set all other Shadow Command Block Registers to FFh. When the COMINIT is received in response to the
COMRESET which is associated with entry into state HP2B:HR_AwaitNoCOMINIT, the Shadow Status register value
shall be updated to either FFh or 80h to reflect that a device is attached.
